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Interface java.io.ObjectInput

public interface ObjectInput

extends DataInput

See Also:

InputStream, ObjectOutputStream, ObjectInputStream

available()

Returns the number of bytes that can be read without blocking.

close()

Closes the input stream.

read()

Reads a byte of data.

read(byte[])

Reads into an array of bytes.

read(byte[], int, int)

Reads into an array of bytes.

readObject()

Read and return an object.

skip(long)

Skips n bytes of input.

 public abstract Object readObject() throws ClassNotFoundException, IOException

Read and return an object. The class that implements this interface defines where the object is "read" from.

Throws: ClassNotFoundException

If the class of a serialized object cannot be found.

Throws: IOException

If any of the usual Input/Output related exceptions occur.

 public abstract int read() throws IOException

Reads a byte of data. This method will block if no input is available.

Returns:

the byte read, or -1 if the end of the stream is reached.

Throws: IOException

If an I/O error has occurred.

 public abstract int read(byte b[]) throws IOException

Reads into an array of bytes. This method will block until some input is available.

Parameters:

b - the buffer into which the data is read

Returns:

the actual number of bytes read, -1 is returned when the end of the stream is reached.

Throws: IOException

If an I/O error has occurred.

 public abstract int read(byte b[],
                          int off,
                          int len) throws IOException

Reads into an array of bytes. This method will block until some input is available.

Parameters:

b - the buffer into which the data is read

off - the start offset of the data

len - the maximum number of bytes read

Returns:

the actual number of bytes read, -1 is returned when the end of the stream is reached.

Throws: IOException

If an I/O error has occurred.

 public abstract long skip(long n) throws IOException

Skips n bytes of input.

Parameters:

n - the number of bytes to be skipped

Returns:

the actual number of bytes skipped.

Throws: IOException

If an I/O error has occurred.

 public abstract int available() throws IOException

Returns the number of bytes that can be read without blocking.

Returns:

the number of available bytes.

 public abstract void close() throws IOException

Closes the input stream. Must be called to release any resources associated with the stream.

Throws: IOException

If an I/O error has occurred.

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